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(!!) (PAIR) 6DR7 Sylvania and Sylvania branded Raytheon black plates NOS 1970 era (1.4ma/37ma and 2.0/33ma)
(!!) (PAIR) 6DR7 Sylvania and Sylvania branded Raytheon black plates NOS 1970 era (1.4ma/37ma and 2.0/33ma)
$ 22.99
1 Pair) 6DR7 Sylvania and Sylvania branded Raytheon black plates NOS 1970 era
1 tube) 1.4ma Gm=1500 37ma Gm=6200 Sylvania
1 tube) 2.0ma Gm=1900 33ma Gm=6500 Sylvania/Raytheon
Good Triode = 1.0-1.5ma Gm=1400-1600
Good Pentode = 25-35ma Gm=5500-6000
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 (PAIR) 6DR7 Sylvania and Sylvania branded Raytheon black plates NOS 1970 era (1.4ma/37ma and 2.0/33ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/2_eb45273a-4a30-4bb2-93ae-ff292dd6b5ee.jpg?v=1741653069){kind=link}
 (PAIR) 6DR7 Sylvania and Sylvania branded Raytheon black plates NOS 1970 era (1.4ma/37ma and 2.0/33ma) "Pin It")